Effect of Zn interlayer on brazeability of AZ31B–Mg alloy to steel sheet Journal Articles

abstract

• The brazeability of AZ31B–H24 magnesium alloy sheet to Zn electroplated, plain carbon steel sheet using an Mg–Al–Zn alloy filler metal and a diode laser heat source has been investigated. While the Zn coating promoted good wetting between the molten filler alloy and the steel sheet, it did not play a direct role in forming the final bond. Bonding between the magnesium alloy and the steel was facilitated by the formation of two transition layers. First, a nanoscale layer of FeAl3 phase formed on the surface of the steel by diffusion of Al from the Mg–Al–Zn brazing alloy into the steel. Upon further cooling, nucleation and growth of either α-Mg+MgZn eutectic phases or Mg2(Al,Zn)3 phase occurred on the FeAl3 surface layer.

authors

• Nasiri, AM
• Zhou, Norman

status

• published 

publication date

• February 2015

has subject area

• 09 Engineering (FoR)
• Materials (Science Metrix)

published in

• Science and Technology of Welding and Joining  Journal

keywords

• AZ31B Mg sheet
• Laser brazing
• MAGNESIUM ALLOY
• MECHANICAL-PROPERTIES
• MG ALLOY
• MICROSTRUCTURE
• MILD-STEEL
• Materials Science
• Materials Science, Multidisciplinary
• Metallurgy & Metallurgical Engineering
• Microstructure
• NICKEL
• Science & Technology
• TIG WELDED-JOINTS
• Technology
• Zn coated steel sheet

Digital Object Identifier (DOI)

• 10.1179/1362171814y.0000000264

start page

• 155

end page

• 163

volume

• 20

issue

• 2